1. Which is the longest rail tunnel in India ?

Answer: Pir Panjal (J&k, 11215 metre)

2. Which is Longest national highway of India ?

Answer: NH-7 ( Varanasi to Kanyakumari - 2,369 km)

3. What is the name of brightest star ?

Answer: Sirius

4. Which is longest river of India

Answer: Ganges

5. Which is highest dam in world ?

Answer:

Jinping-I Dam - 305 m (1,001 ft) in China on Yalong river.
Second Highest is Nurek Dam 300 m (980 ft) Tajikistan on Vakhsh river.

6. Which is smallest continent of world ?

Answer: Australia

7. Which is the Highest mountain peak ?

Answer: Mount Everest (8,850 m)